Nanowires

Cross Section of a Silicon Nanowire

Material reduced in 2 dimensions to create quantum confinement
Electronic properties change from bulk materia

Carbon atoms arranged in a periodic 2 dimensional structure

Nanocube (Pd)

nanocube with an aspect ratio of ~1
100 degrees Celcius, 0% ethylene glycol

Nanobar (Pd)

nanobar with an aspect ratio of ~2
100 degres Celsius, 9.1% ethylene glycol

Pd-Pt alloy star-decahedrong

Thermodynamically: Fcc metal nanostructure — cubooctahedrons with the surface bounded by a mix of both {111} and {100} facets
Kinetic control: single crystal nanoplate, nanocube, nanobarand nanorod with {100} and {110} facets
Anisotropic nanostructure eveolved into the thermodynamically favored shape during an aging process


Nanorod (Pd)

120 degrees Celsius, 72.7% ethylene glycol

Ag nanoplates

Pd-Pt nanoplates (top view)

<111> orientation,
epitaxial growth of Pt shells on Pd nanoplates

Chemical analysis (top view)

STEM-EDS profile: Pd-Pt core shell

Chemical Analysis (side view)

STEM-EDS profile: Pd-Pt core shell
HRTEM: epitaxial growth of Pt shells on Pd nanoplates